Traefik from 3.2.0 before 3.7.15 contains a data race in the experimental FastProxy that allows unauthenticated attackers to crash the process by abusing HTTP/1 protocol upgrades. Attackers can repeatedly open and abort upgraded connections such as WebSocket, corrupting the unsynchronized shared bufio.Reader and triggering an unrecovered panic that terminates Traefik.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Fri, 30 Oct 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Traefik from 3.2.0 before 3.7.15 contains a data race in the experimental FastProxy that allows unauthenticated attackers to crash the process by abusing HTTP/1 protocol upgrades. Attackers can repeatedly open and abort upgraded connections such as WebSocket, corrupting the unsynchronized shared bufio.Reader and triggering an unrecovered panic that terminates Traefik. | |
| Title | Traefik 3.2.0 before 3.7.15 FastProxy Data Race Denial of Service | |
| First Time appeared |
Traefik
Traefik traefik |
|
| Weaknesses | CWE-567 | |
| CPEs | cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Traefik
Traefik traefik |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-30T15:17:13.625Z
Reserved: 2026-10-30T10:56:15.489Z
Link: CVE-2026-119574
No data.
Status : Awaiting Analysis
Published: 2026-10-30T14:16:46.453
Modified: 2026-10-30T14:16:46.590
Link: CVE-2026-119574
No data.
OpenCVE Enrichment
Updated: 2026-10-30T15:15:07Z
Weaknesses